Excluding the homestead and property passing to the surviving spouse under the federal Social Security system, the value of the augmented estate includes the value of the decedent‘s nonprobate transfers to the decedent’s spouse, which consists of all property that passed outside probate at the decedent’s death from the decedent to the surviving spouse by reason of the decedent’s death that would have been included in the augmented estate under section 524.2-205, paragraph (1) or (2), had the property passed to or for the benefit of a person other than the decedent’s spouse, the decedent, or the decedent’s creditors, estate, or estate creditors.